1313128316 has 12 divisors (see below), whose sum is σ = 2303765688. Its totient is φ = 654909552.

The previous prime is 1313128291. The next prime is 1313128321. The reversal of 1313128316 is 6138213131.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411866 + ... + 415041.

It is an arithmetic number, because the mean of its divisors is an integer number (191980474).

Almost surely, 2^1313128316 is an apocalyptic number.

It is an amenable number.

1313128316 is a deficient number, since it is larger than the sum of its proper divisors (990637372).

1313128316 is a wasteful number, since it uses less digits than its factorization.

1313128316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827308 (or 827306 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 1313128316 is about 36237.1124125530. The cubic root of 1313128316 is about 1095.0544696047.

The spelling of 1313128316 in words is "one billion, three hundred thirteen million, one hundred twenty-eight thousand, three hundred sixteen".